16. Streams. Researchers collected samples of water
Chapter 24, Problem 16(choose chapter or problem)
16. Streams. Researchers collected samples of water fromstreams in the Adirondack Mountains to investigate theeffects of acid rain. They measured the pH (acidity) of thewater and classified the streams with respect to the kind ofsubstrate (type of rock over which they flow). Alower pHmeans the water is more acidic. Here is a plot of the pH ofthe streams by substrate (limestone, mixed, or shale):Here are selected parts of a software analysis comparingthe pH of streams with limestone and shale substrates: a) State the null and alternative hypotheses for this test.b) From the information you have, do the assumptionsand conditions appear to be met?c) What conclusion would you draw?
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